213515003 has 16 divisors (see below), whose sum is σ = 245802816. Its totient is φ = 183912960.

The previous prime is 213514993. The next prime is 213515017. The reversal of 213515003 is 300515312.

It is a cyclic number.

It is not a de Polignac number, because 213515003 - 2¹⁴ = 213498619 is a prime.

It is a super-3 number, since 3×213515003³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213515083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3551 + ... + 20967.

It is an arithmetic number, because the mean of its divisors is an integer number (15362676).

Almost surely, 2^213515003 is an apocalyptic number.

213515003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213515003 is a deficient number, since it is larger than the sum of its proper divisors (32287813).

213515003 is a wasteful number, since it uses less digits than its factorization.

213515003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17494.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 213515003 is about 14612.1525792746. The cubic root of 213515003 is about 597.6901962735.

The spelling of 213515003 in words is "two hundred thirteen million, five hundred fifteen thousand, three".